Cutter-head



Patented Aug. 2, |898.

No" 608272" .1. w. scHLEmHEn.

` GUTTER HEAD.

(Application med mr. 9, leas.)

l h t Sheet l. (No Model.) 2 S ee s No.' 608,272. Patented Aug. 2, |898.I.1. w. scHLExcnEn.

CUTTER HEAD.

(Appncanon 'med un s Issa) 2 Sheets-Sheet 2.

(No Model.)

UNITED' S'TATnsj PATIENT Ottica.

JOHN WILLIAM SCHLEIOHER, OF LOUISVILLE, KENTUCKY.

CUTTER-HEAD.

SPECIFICATION forming part of Letters Patent No. 608,272, dated August2, 1898.

Application filed March 9 1898.

To @ZZ whom t may concern.-

Be it known that I, JOHN WILLIAM SCHLEI- CHER, a citizen of the UnitedStates, residing at Louisville, in the county of Jefferson and State ofKentucky, have invented certain new and useful Improvements inCutter-Heads, of which the following is a specification.

My present invention pertains to a new and useful cutter-head, theconstruction and advantages of which will be hereinafter set forth,

'reference being had to the annexed drawings, in whichv Figure 1 is aside elevation ofi the cutterhead; Fig. 2, an edge view showing theteeth in the position which they occupy in relation to a piece of work;Fig. 8,3. sectional view on the line 1 l of Fig. l; Fig`.'4,'a perspective view of a portion of thebody of the cutter-head, showing theformation and relation of the seats for the teeth; Fig. 5, a sectionalview of a modified form, and Fig.l 6 an edge view of the same. Y

The object of my inventionis toproduce a cutter-head especially adaptedfor forming mortise-and-tenon work andffone which may be substituted forthe separate disk-blades and spacing-washers mounted on a mandrel, asare now commonly employed'.Y-

I have found by actual experience that it is very difiicult to securethe requisite uniformity in thickness in theldiskfblades and washers,the variation being such at times that the work will not match up withthat nicety which is desirable in work of this class, more especially sowith boxes. Again, the disks and washers, while they may be of theproper thickness, will at times warp, and consequently will not come totheir proper position upon the mandrel. Furthermore, the disk-blades areexpensive to sharpen. With a cutter-head constructed in accordance withmy plan these objections are overcome, while further advantages presentthemselves in the way of simplicityofadjustment of the teeth, thefacility with which they maybe sharpened, and the .great saving'inlpower used.

Referring to the drawings, A indicates the body, of the cutter, providedwith a central opening B for the receptionof a mandrel. In each sideface of thev body there is formed a series of seats O for the receptionof the cutter blades or knives D, the seats and blades Serial No.673,214. (No model.)

upon referenceto Figs. Sand 4, the seats upon the opposite faces beingarranged in pairs and everyrother pair being oppositely inclined. IntheV upper pair (shown in Fig. 4) the seat-upon the near face extendsfrom a point near the surface at its inner end to a greater depth as itnears the periphery of the body, while the complementary seat upon theopposite face begins deep at its inner end and nears the surface `as itextends outward. These seats 'are' not parallel throughout their lengthin the form shown in Figs. 2, 3, and 4, but are slightly inclined towardeach other as they near the l periphery. This is indicated most clearlyin Fig. 3 and is also shown by the ,blades'infFig 2. The seats are alsoslightly inclined edgewise or in the direction of their width and do notstand at right angles to the axial line of the cutter-head. Eachsucceeding pair, of -seats is inclined inthe same direction, while theintermediate pairs are inclined in theopposite direction.

Elongated slots or openings E' extend through the bodyv near the innerend of each seat, while at the outer end overhanging ears or lugs F areprovided, forming channels or grooves G.

Each blade is provided with an opening at its inner end, and when inplace a bolt II is passed therethrough and through slot F. andfastened,securing the blades in their position. The outer or cuttingends of the blades may be shaped as found best,the form shown havingbeen found to work very satisfactorily.

In practice the blades are put in place, adjusted, and then if need besharpened,which may be accomplished by rotating the cutterhead andbringing the blades against an emery-wheel or the like.

In Fig. 2 the position of the blades relative I to the work isillustrated, wherein it `will be seen that two mortises vand a tenonofequal width will be formed. One pair of blades is shown in the cuts,fromwhich it will be noted that only the extreme forward outer edge comesinto action. The next pair of bladesl IOO will make a cut upon theopposite side of the mortise, sufiicient clearance for chips, sawdust,&e., being allowed.

In Figs. 5 and G a slightly-modified form is shown, wherein it will beseen that each pair of blades I, instead of converging toward each otherat their outer ends, are parallel throughout their entire length. Thisconstruction is preferable in certain Ways, particularly in that thereis less friction in mal;- ing the cuts.

In practice a number of these cutter-heads are designed to be mountedupon a mandrel.

By the use of the separate teeth they may be tempered independently, andtheir cost of manufacture is much less than with the disliblades. So,too, should one tooth-blade become injured it is not necessary toreplace the rest, While in the case of a disk the dcstruction of onetooth necessitates the discarding of the entire disk and at times theremoval from the mandrel of a number ot others to permit itsreplacement.

IIaving thus described my invention, what is claimed as new is- 1. In acutter-head the combination ol a body portion provided with a series ofseats upon its opposite faces, arranged tangentially to a circleconcentric with the axial line ot the cutter; and blades mounted in saidseats, the blades of succeeding pairs being inclined in reversedirection relative to a plane perpendicular to the axis of thecutter-head.

Q. In a cutter-head, the combination of a body portion provided with aseries of seats arranged in pairs upon its opposite faces, and formedtangentially to a circle concentric with the axial line of the cutter,said seats inclining in the direction of their length and also inclinededgewise with relation to the plane of rotation ot' the head; and bladesmount-ed in said seats.

3. In a cutterllead, the combination of a body portion provided with aseries ot seats arranged in pairs upon its opposite faces and occupyinga position tangential to a circle concentric with the axial center ofthe body, said seats inclining in the direction of their length, but soarranged as to be parallel to each other, and also inclined in thedirection of their Width with relation to the plane of rotation of thehead; and blades mounted in said seats.

i. In a cutter-head, the combination of a body portion, )rovided with aseries of seats arranged in pairs upon its opposite faces, with eachalternate pair having the same formation with regard to direction ofinclination, said seats being inclined in the direction of their lengthand also inclined from the plane of rotation as regards their width, andeach seat of each pair being parallel to the other throughout itslength; and blades mounted in the seats.

5. In a cutter-head, the combination of a body portion provided with aseries of seais C arranged upon opposite sides in pairs substantially asdescribed, elongated openings E passing through the body portion andopening into said seats; ears F' extending into said seats, and blades Dmounted in said seais, substantially as described.

In Witness whereof I hereunto set my hand in the presence of twowitnesses.

JOHN VILLIAM SCIILEICIIER.

\Vitnesses:

C. C. MENGEL, Jr., ROBERT SCHLEUIIER.

